Question

1. What is stimulus?

2. Define response.

3. What are tropic movements
4. What excretory products are produced in plants?

5. When do stomata open and close?
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Answer 1

Answer:

1.someting that causes directly, development, interest.

2.an answer to somebody something

3.directional movement of particular part of a plant in response to environmental stimuli

4. carbon dioxide, oxygen

5. allow for the uptake of carbon dioxide anf to limit the loss of water due to evaporation